:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef3fb;
  --ink: #13192b;
  --ink-soft: #2d354b;
  --muted: #626b7f;
  --muted-2: #7b8497;
  --line: #dfe5ef;
  --line-strong: #ccd5e3;
  --cyan: #007fa8;
  --blue: #2f67e8;
  --violet: #7047d6;
  --pink: #c63dc8;
  --green: #167a63;
  --accent-gradient: linear-gradient(120deg, #0799bd 0%, #356cf4 48%, #8747dd 100%);
  --shadow-sm: 0 10px 30px rgba(32, 46, 81, 0.06);
  --shadow-md: 0 24px 70px rgba(32, 46, 81, 0.1);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 92% -4%, rgba(127, 92, 238, 0.1), transparent 28rem),
    radial-gradient(circle at -8% 8%, rgba(25, 179, 220, 0.1), transparent 25rem),
    var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3,
.brand-name,
.button {
  font-family: ui-rounded, "SF Pro Rounded", "Segoe UI", sans-serif;
}

:focus-visible {
  outline: 3px solid rgba(47, 103, 232, 0.72);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  transform: translateY(-170%);
  padding: 0.7rem 0.95rem;
  border-radius: 0.7rem;
  background: var(--ink);
  color: #fff;
  font-weight: 750;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 3rem), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(42, 57, 90, 0.09);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(130%);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
}

.header-inner {
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.78rem;
  min-width: max-content;
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.brand-mark {
  display: block;
  width: 2.8rem;
  height: 2.8rem;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 8px 22px rgba(76, 76, 177, 0.18);
}

.brand-name {
  font-size: 1.04rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.45rem;
  margin-left: auto;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
}

.eyebrow,
.card-label,
.project-kicker {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.1rem;
  min-height: 49px;
  padding: 0.76rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 780;
  transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.button-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 14px 30px rgba(70, 91, 207, 0.2);
}

.button-secondary {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(47, 103, 232, 0.58);
  box-shadow: var(--shadow-sm);
}

.manifesto-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.manifesto-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.manifesto-inner span {
  padding: 1rem;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 720;
  text-align: center;
}

.manifesto-inner span:first-child {
  border-left: 1px solid var(--line);
}

.manifesto-inner span:last-child {
  color: var(--ink-soft);
}

.section {
  border-top: 1px solid var(--line);
  padding: clamp(4.8rem, 8vw, 7.5rem) 0;
}

.manifesto-strip + .section {
  border-top: 0;
}

.section-contrast {
  background:
    linear-gradient(145deg, rgba(50, 114, 232, 0.06), rgba(126, 75, 216, 0.04)),
    rgba(255, 255, 255, 0.74);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(290px, 0.68fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: end;
  margin-bottom: 3rem;
}

.section-intro h2,
.section-heading h2 {
  max-width: 13ch;
  margin-bottom: 0;
  font-size: clamp(2.4rem, 5vw, 4.35rem);
  line-height: 1;
  letter-spacing: -0.052em;
}

.section-summary,
.section-heading p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.7;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.method-step {
  min-height: 238px;
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  margin-bottom: 3.6rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 162, 196, 0.14), rgba(112, 71, 214, 0.13));
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 850;
}

.method-step h3 {
  margin-bottom: 0.65rem;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
}

.method-step p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.process-section {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(47, 103, 232, 0.08), rgba(112, 71, 214, 0.065)),
    #f9fbff;
  color: var(--ink);
}

.process-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 20%, rgba(7, 153, 189, 0.11), transparent 24rem),
    radial-gradient(circle at 88% 76%, rgba(135, 71, 221, 0.1), transparent 28rem);
}

.process-section .shell {
  position: relative;
}

.process-section .eyebrow {
  color: var(--cyan);
}

.process-section .section-summary {
  color: var(--muted);
}

.process-intro {
  align-items: start;
}

.process-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow-sm);
  list-style: none;
}

.process-flow li {
  position: relative;
  min-height: 238px;
  padding: 1.45rem;
}

.process-flow li + li {
  border-left: 1px solid var(--line);
}

.process-number {
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  margin-bottom: 3.25rem;
  border: 1px solid rgba(47, 103, 232, 0.24);
  border-radius: 50%;
  background: rgba(47, 103, 232, 0.06);
  color: var(--blue);
  font-size: 0.7rem;
  font-weight: 850;
}

.process-flow h3,
.process-benefits h3 {
  margin-bottom: 0.55rem;
  letter-spacing: -0.025em;
}

.process-flow h3 {
  font-size: 1.2rem;
}

.process-flow p,
.process-benefits p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.58;
}

.process-flow p {
  font-size: 0.9rem;
}

.process-benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.process-benefits article {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-sm);
}

.benefit-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.65rem;
  background: linear-gradient(135deg, rgba(33, 184, 211, 0.13), rgba(135, 71, 221, 0.15));
  color: var(--blue);
  font-weight: 850;
}

.process-benefits h3 {
  font-size: 1rem;
}

.process-benefits p {
  font-size: 0.86rem;
}

.evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
}

.section-heading.compact h2 {
  margin-bottom: 1.25rem;
}

.evidence-list {
  display: grid;
  gap: 0.8rem;
}

.evidence-list > div {
  display: grid;
  grid-template-columns: minmax(130px, 0.5fr) minmax(0, 1.5fr);
  gap: 1.2rem;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: #fff;
  box-shadow: 0 10px 26px rgba(42, 57, 90, 0.045);
}

.evidence-state {
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.06em;
}

.evidence-hot {
  color: var(--cyan);
}

.evidence-dim {
  color: var(--muted-2);
}

.evidence-list span:last-child {
  color: var(--muted);
  font-size: 0.93rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  width: fit-content;
  color: var(--blue);
  font-weight: 780;
  text-underline-offset: 4px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0;
  background: rgba(255, 255, 255, 0.62);
  color: var(--muted-2);
  font-size: 0.8rem;
}

.footer-inner {
  flex-wrap: wrap;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
  font-weight: 750;
}

.footer-dot {
  width: 0.46rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 127, 168, 0.35);
}

@media (max-width: 980px) {
  .section-intro,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-flow li:nth-child(3),
  .process-flow li:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .process-flow li:nth-child(3) {
    border-left: 0;
  }

  .process-benefits {
    grid-template-columns: 1fr;
  }

  .method-step:last-child {
    grid-column: 1 / -1;
  }

  .manifesto-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .manifesto-inner span:nth-child(3),
  .manifesto-inner span:nth-child(4) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(calc(100% - 1.5rem), var(--max));
  }

  .header-inner {
    min-height: 64px;
  }

  .brand-mark {
    width: 2.45rem;
    height: 2.45rem;
  }

  .site-nav {
    display: none;
  }

  .section {
    padding: 4rem 0;
  }

  .section-intro {
    gap: 1.4rem;
    margin-bottom: 2.3rem;
  }

  .section-intro h2,
  .section-heading h2 {
    font-size: clamp(2.35rem, 11vw, 3.5rem);
  }

  .method-grid,
  .process-flow,
  .manifesto-inner {
    grid-template-columns: 1fr;
  }

  .method-step:last-child {
    grid-column: auto;
  }

  .method-step {
    min-height: auto;
  }

  .step-number {
    margin-bottom: 2rem;
  }

  .process-flow li {
    min-height: auto;
  }

  .process-flow li + li,
  .process-flow li:nth-child(3),
  .process-flow li:nth-child(4) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .process-number {
    margin-bottom: 2rem;
  }

  .manifesto-inner span,
  .manifesto-inner span:first-child {
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .manifesto-inner span:last-child {
    border-bottom: 0;
  }

  .evidence-list > div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }
}